Add logging

includes/class-activitypub.php

@@ -615,6 +615,42 @@ private static function register_post_types() {
 			)
 		);
 
+		register_post_meta(
+			Outbox::POST_TYPE,
+			'activitypub_sent_json',
+			array(
+				'type'              => 'string',
+				'description'       => 'JSON activity for regular user',
+				'single'            => true,
+				'sanitize_callback' => null,
+				'show_in_rest'      => false,
+			)
+		);
+
+		register_post_meta(
+			Outbox::POST_TYPE,
+			'activitypub_sent_inboxes',
+			array(
+				'type'              => 'array',
+				'description'       => 'List of inboxes for regular user',
+				'single'            => true,
+				'sanitize_callback' => null,
+				'show_in_rest'      => false,
+			)
+		);
+
+		register_post_meta(
+			Outbox::POST_TYPE,
+			'activitypub_send_log',
+			array(
+				'type'              => 'array',
+				'description'       => 'Delivery logs for the activity',
+				'single'            => false,
+				'sanitize_callback' => null,
+				'show_in_rest'      => false,
+			)
+		);
+
 		// Both User and Blog Extra Fields types have the same args.
 		$args = array(
 			'labels'              => array(

includes/class-dispatcher.php

@@ -103,8 +103,24 @@ private static function send_activity_to_followers( $activity, $actor_id, $outbo
 
 		$json = $activity->to_json();
 
+		// We will store the json as generated by the transformer, even though it 's also in plaintext in $outbox_item->post_content
+		// This will also allow us to keep the logs below leaner.
+		\add_post_meta( $outbox_item->ID, 'activitypub_sent_json', $json );
+		// This will allow error checking later, that all inboxes have been sent.
+		\add_post_meta( $outbox_item->ID, 'activitypub_sent_inboxes', $inboxes, true );
+
 		foreach ( $inboxes as $inbox ) {
-			safe_remote_post( $inbox, $json, $actor_id );
+			$response = safe_remote_post( $inbox, $json, $actor_id );
+			$to_log   = array(
+				'error'     => null,
+				'inbox'     => $inbox,
+				'code'      => $response['code'],
+				'delivered' => 202 === $response['code'],
+			);
+			if ( ! $to_log['delivered'] ) {
+				$to_log['error'] = $response['body'];
+			}
+			\add_post_meta( $outbox_item->ID, 'activitypub_send_log', $to_log );
 		}
 
 		$outbox_item->post_status = 'publish';